System and method for retrofitting a refrigeration system from hcfc to hfc refrigerant

ABSTRACT

A system and method for retrofitting a refrigeration system containing an HCFC refrigerant and a compatible lubricant, with an HFC refrigerant, comprising providing a transport container containing a mixture of a miscible lubricant and the HFC refrigerant, removing the HCFC refrigerant from the refrigeration system while maintaining at least a portion of a lubricant immiscible with the HFC refrigerant, and charging the refrigeration system with the mixture. The polyol ester lubricant may be present in a range exceeding about 5-15% by weight, e.g., 8%.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application is a non-provisional of, and claims benefit of priority under 35 U.S.C. §119(e) from U.S. Provisional Patent Application No. 62/032,129, filed Aug. 1, 2014 and from U.S. Provisional Patent Application No. 62/017,530, filed Jun. 26, 2014, the entirety of which are expressly incorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to the field of refrigerants, refrigeration systems, and refrigeration system lubricants.

BACKGROUND OF THE INVENTION

R-407C is an HFC refrigerant replacement for R-22, a HCFC refrigerant, in positive displacement systems such as new or existing residential and commercial air-conditioners and heat pumps. R-407C offers similar performance to R-22 and can be used to retrofit existing R-22 air-conditioning and refrigeration systems.

R-407C is a mixture of hydrofluorocarbons used as a refrigerant. It is a zeotropic blend of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a). R-32, R-125 and R-134a are present in the proportions 23%/25%/52% by weight (a ±2% tolerance is allowed for each of the components). R-407A is a mixture of 20% R32, 40% R125, and 40% R-134a, and is therefore R-407A is similar in many respects to R407C. Difluoromethane serves to provide the heat capacity, pentafluoroethane decreases flammability, tetrafluoroethane reduces pressure. R-22 is chlorodifluoromethane.

Most compressors require a lubricant to protect internal moving parts. The compressor manufacturer usually recommends the type of lubricant and proper viscosity that should be used to ensure acceptable operation and equipment durability. Recommendations are based on several criteria, which can include: lubricity; lubricant/refrigerant solubility; lubricant/refrigerant miscibility; compatibility with materials of construction; and thermal stability and compatibility with other lubricants. It is important to follow the manufacturer's recommendations for lubricants to be used with their equipment.

Lubricant return to the compressors is very important as well. One factor that affects this is the liquid-phase lubricant/refrigerant miscibility, particularly at evaporator temperatures. Miscibility is the ability of two liquids to mix and form a single liquid phase. Ideally, the lubricant-refrigerant pair have sufficient miscibility or mutual solubility to allow the lubricant to flow with the liquid refrigerant and return to the compressor in a single phase. Even if the lubricant/refrigerant pair are not miscible (two liquid phases form) in the evaporator, they may still have some degree of solubility. Solubility of refrigerant in lubricant lowers lubricant viscosity, which helps it flow through the evaporator and return to the compressor. This is why many refrigeration systems can operate properly, even though the lubricant and refrigerant are immiscible (yet partially soluble) at evaporation temperatures. Other factors, such as refrigerant vapor velocity and system geometry, play key roles in lubricant return. Overall, it is important to note that lubricant/refrigerant miscibility is helpful, but not necessarily essential for proper system operation.

In general, R-22 and mineral oil are miscible over most of the expected ranges of operating conditions for normal air conditioning and high to medium temperature operation. Miscibility is generally believed to aid lubricant return to the compressor. The miscibility of refrigerant and lubricant is determined by several factors: the relative amounts of refrigerant and lubricant present, the temperature, the chemical makeup of the lubricant and of the refrigerant, and the viscosity of the lubricant.

Therefore, it may be desirable in a retrofit of an existing system of this type to use a miscible lubricant, such as polyol ester lubricant, with R-407C refrigerant. In general, R-407C is miscible with polyol ester (POE) lubricant and immiscible with alkylbenzene and mineral oil lubricant.

Residual mineral oil or alkylbenzene left in a refrigeration system after a retrofit to any HFC refrigerant is performed is known to decrease the lubricant/refrigerant miscibility. This is one of the reasons why three oil changes are generally recommended when a system is being converted or retrofit to use HFC refrigerants and POE lubricants. Thus, a traditional recommendation is to replace all mineral oil or alkylbenzene lubricant with POE during a retrofit.

Emerson Climate Technologies (Copeland®) provided in 1995 & 2005 the following recommendations when conducting a changeover: “Copeland's only approved lubricants for use with R-407C are Polyol ester lubricants”; “Mineral oil lubricant, such as 3GS, cannot be used as the compressor lubricant. Copeland recommends the following lubricant choices: Polyol Ester (POE)”; “The mineral oil must be removed from the compressor crankcase. Hermetic compressors will have to be removed from the piping and the lubricant drained out through the suction stub. It is advisable to do an acid test on the lubricant removed”; “Those systems that have oil separators, oil reservoirs, oil floats and suction line accumulators must have the oil drained from them. If the liquid control device is going to be replaced, it is advisable that the suction line, liquid line, and evaporator coil be blown clean using properly regulated dry nitrogen”; “POEs are very hygroscopic. They will very quickly absorb moisture from the air once the container is opened. Once the lubricant is added to the compressor, the compressor should be quickly installed. Like an open container, an open compressor with POE will absorb moisture. Add the correct amount of lubricant to the compressor. On systems using enhanced surfaces in the heat exchanger, excessive mineral oil can adversely effect the heat transfer due to logging. Therefore, it is desirable to have no more than one percent mineral oil in systems employing these types surfaces,” lvhvac.com/cope_bulletins/95-14.pdf.

Dupont (2004) advises that no more than 5% mineral oil remain in the refrigeration system after a changeover from R-22 to R-407C, (www2.dupont.com/Refrigerants/en_US/assets/downloads/h70004_Suva407C_retrofit_guide.pdf)

Similarly, Tecumseh advised in 2009 (www.air-innovations.nl/web/pdf/GUIDELINES-FOR-UTILIZATION-OF-R407C.pdf):

-   -   Synthetic Lubricants: Polyol Esters (POEs) And Polyvinyl Ethers         (PVEs)     -   A) Miscibility     -   1. Miscibility is the ability of the lubricant and the         refrigerant to mix. This miscibility is a very important factor         in providing proper heat transfer and in returning lubricant to         the compressor in a refrigeration system over its range of         operating temperatures.     -   2. R407C and Mineral oils (MO) are not miscible     -   3. Polyol Ester (POE) as well as Polyvinyl Ether (PVE) oils and         R407C are miscible.     -   4. R407C and Synthetic Alkylate (SA) oils are partially miscible         . . . .     -   C) Compatibility . . .     -   2. While polyol ester and polyvinyl ether oils are compatible         with mineral oils, they should not be indiscriminately mixed         with mineral oils in R407C refrigerant systems. This practice         could result in the inability of the oil to return to the         compressor and/or reduce heat transfer performance in the         evaporator. However, small amounts up to 5% of mineral oil are         acceptable in field retrofit situations (1% or less is         preferred).

Ennio Campagna et al., “The Use of R-407C: Applications and Guidelines”, makina.beun.edu.tr/eskisite/akademik_kadro/meyriboyun/mak723/The_Use_of R-407C.pdf, states:

-   -   1) General Considerations for HFC Refrigerants     -   Systems which use R407C normally have compressors charged with a         miscible lubricant such as POE (polyolester). There are many         manufacturers and grades of these lubricants. R-407C is         generally not used with mineral or alkyl-benzene (i.e.         hydrocarbon based) oils as the miscibility is not adequate to         ensure satisfactory oil return to the compressor. It is very         important that, when servicing a system and oil is needed, the         correct oil be used. Seek guidance from the system or compressor         manufacturer on which specific oil to use in a maintenance         situation.     -   * * *     -   b) System contamination with mineral oils, or with R22, can have         a serious effect on performance and system reliability. Systems         which use enhanced tube heat exchangers (evaporators and         condensers) are particularly vulnerable to performance         degradation arising from the presence of HC based oils. It is         strongly recommended that dedicated service gauge sets are used         for R407C to prevent inadvertent contamination.

Similarly, Herronhill provides general guidelines to assist in the replacement of R22 condensing units with equivalent R407C units (2004, www.heronhill.co.uk/technical-information/40/converting-r22-systems-to-r407c), stating “Condensing units built and supplied by IMI Air Conditioning Ltd. (now Marstair Ltd) before 1999, for use with R22 will contain mineral oil. R407C units will contain polyolester oil (POE). Check the compressor label to confirm the type of oil in the system. For safe system operation it is essential to remove the mineral oil from the existing system, as R407C is not compatible with mineral oil. On completion of the change over the concentration of mineral oil remaining in the system should not exceed 5% of the total oil charge.

Sundaresan, S. G.; Pate, M. B.; Doerr, T. M.; and Ray, D. T., “A Comparison of the Effects of POE and Mineral Oil Lubricants on the In-Tube Evaporation of R-22, R-407C and R-410A” (1996). International Refrigeration and Air Conditioning Conference. Paper 322. docs.lib.purdue.edu/iracc/322, describe tests on the heat transfer efficiency of R-22, R-407C and R-410A on smooth and fined tubes, when neat, mixed with mineral oil, and when mixed with POE oil. POE-mineral oil mixtures were not tested. The heat transfer efficiency was higher for R-407C mixed with POE than with mineral oil.

Some more recent consideration of the choice or lubricant considers mixtures of lubricants, including mineral oil (MO) and polyol esters (POE). For example, The News, (Peter Powell, Dec. 3, 2012, www.achrnews.com/articles/print/121529-retrofit-round-up-plenty-of-options) states:

-   -   Retrofit Round-up: Plenty of Options     -   Because no one HFC refrigerant can be retrofitted efficiently         into the entire range of R-22 equipment, a wide and sometimes         changing variety of HFCs have entered the market. The NEWS         contacted a number of refrigerant manufacturers asking them to         discuss some of their most popular HFCs for R-22 retrofits, the         range of applications, and servicing tips.     -   While this can provide a guideline, The NEWS urges readers to         contact refrigerant manufacturers directly to discuss the         specific R-22 system being considered for retrofit and what HFC         refrigerants might best work in such applications. This listing         is in alphanumerical order according to ASHRAE designations.     -   R-407A     -   Gus Rolotti, technical marketing director of Arkema's North         American fluorochemicals business, described R-407A as a         refrigerant for low- and medium-temp refrigeration. “Both R-407A         and R-407C are well proven in the industry and provide good         performance coupled with a lower GWP. They require the use of a         POE oil.” Because of that, there needs to be a changeout of the         mineral oil in an existing R-22 system.     -   Noted Rolotti, “First, fix any leaks and identify components         that may need to be replaced or fixed. Recover the R-22         completely, repair/replace any components as identified earlier         and pull the system into a deep vacuum. Remove the required         amount of mineral oil either by flushing with an external agent         or using the R-22 from the system. Once most of the mineral oil         is removed, replace it with POE oil and pull the system into a         deep vacuum again. Refill with the appropriate amount of the         retrofit refrigerant and run the system to set up controls and         operating conditions. It is recommended that the filter drier is         always replaced when the system is opened to ensure that there         is fresh desiccant available to dry the system.”     -   R-407C     -   Arkema's Rolotti considers R-407C a choice for air conditioning.         Retrofit procedures are similar to those with R-407A         refrigerant.     -   In his comments regarding R-407C, Ron Vogl, technical marketing         manager for Honeywell Refrigerants, described it as a choice for         residential and light commercial a/c applications. The retrofit         process for R-407C, he said, involves recovering R-22. Then,         regarding oil, Vogl said, “POE is recommended. If existing MO is         used, the addition of some POE to the system is required for         proper oil return.” The use of the refrigerant requires a         minimum of 20 percent POE for close-coupled a/c systems with no         liquid receivers. No TXV change required, but minor adjustments         may be needed. Replace any O-rings, seals, and other elastomers         used in the system. In most air conditioning and heat pump         systems this only applies to the Schrader valve seal and cap         seal material. The next step is to evacuate and recharge.         (Pounds of 407C=pounds of original refrigerant×70.6 divided by         73.9.) Then adjust system safety and operating controls; label         system indicating refrigerant and charged lubricant.

National Refrigerants, states (date unknown, www.nationalref.com/pdf/R22_Alternatives.pdf):

-   -   Will the blends work with mineral oil?     -   HFC Refrigerants with Mineral Oil     -   They don't mix so the mineral oil will form a separate layer in         the receiver or other high-side liquid hold up.     -   Mineral Oil will remain thick on the low side and not be         returned back to the compressor.     -   Will the blends work with mineral oil? Hydrocarbons (HC) in         Blends     -   HC soaks into mineral oil and thins it so it will circulate         easily around the system.     -   The thinned mineral oil will move easily on the low side.     -   The mineral oil/HC mixture will still not mix with liquid HFC on         the high side of the system. A layer of oil will still form in         the receiver or other liquid hold-up.     -   Partial POE Retrofit     -   Some amount of mineral oil is replaced with POE (does not         require 3 flushes or less than 5% mineral oil).     -   The POE mixes well with the mineral oil, and the resulting         mixture dissolves somewhat into liquid HFC.     -   The oil mixture will be carried by the liquid HFC out of the         receiver.     -   National Refrigerants testing has shown that as little as 10%         POE in mineral oil will circulate as much as an older compressor         will pump out into a system.     -   These tests have also shown that there is very little difference         in oil solubility with all of the blends on the market,         regardless of the hydrocarbon content in the blend. Partial POE         works with all of the blends, but hydrocarbons do not appear to         help with liquid solubility of mineral oil with HFCs.

Therefore, there has been some evolution as to whether mineral oil can remain in the refrigeration system after a retrofit, with the permissible proportion of mineral oil increasing. In particular, National Refrigerants proposes a partial POE retrofit, with greater than 5% mineral oil remaining. However, the existing recommendations appear to require empirical testing for cases other than less than 5% mineral oil remaining.

See, U.S. Pat. Nos. 2,834,748; 2,846,458; 2,889,379; 2,917,480; 2,931,840; 2,970,988; 3,085,918; 3,384,828; 3,723,318; 3,884,828; 4,138,855; 4,198,313; 4,272,960; 4,465,786; 4,482,465; 4,788,352; 4,798,818; 4,810,403; 4,941,986; 4,944,890; 5,026,497; 5,053,155; 5,080,823; 5,108,637; 5,182,040; 5,227,245; 5,304,320; 5,318,716; 5,360,566; 5,370,812; 5,387,357; 5,417,871; 5,425,890; 5,458,798; 5,616,275; 5,622,644; 5,624,596; 5,626,790; 5,648,017; 5,672,293; 5,685,163; 5,714,083; 5,785,883; 5,788,886; 5,811,603; 5,968,406; 6,025,532; 6,106,740; 6,111,150; 6,117,356; 6,235,951; 6,258,292; 6,316,681; 6,374,629; 6,426,019; 6,516,837; 6,526,764; 6,589,355; 6,604,368; 6,606,868; 6,629,419; 6,673,976; 6,783,691; 6,858,571; 6,991,743; 7,238,299; 7,279,451; 7,341,984; 7,442,321; 7,465,698; 7,524,805; 7,629,306; 7,767,638; 7,825,081; 7,829,748; 7,833,433; 7,846,355; 7,862,742; 7,972,528; 8,008,244; 8,053,404; 8,101,672; 8,148,317; 8,444,874; 8,465,664; 8,551,354; 8,557,136; U.S. Published Patent Application Nos. 20020046568; 20030042463; 20040089839; 20040119047; 20040127383; 20040256594; 20050233923; 20050233931; 20050233932; 20050245421; 20050247905; 20060019857; 20060025322; 20060043331; 20060058560; 20060243944; 20060243945; 20070007488; 20070010592; 20070069175; 20070108403; 20070210275; 20070210276; 20070290163; 20070290177; 20080069177; 20080075673; 20080099190; 20080121837; 20080171652; 20080230738; 20080308763; 20080314073; 20090041677; 20090053695; 20090120619; 20090158771; 20090224199; 20090242828; 20090253820; 20090278076; 20090285764; 20090302285; 20090305876; 20100025619; 20100044619; 20100048961; 20100075046; 20100122545; 20100127209; 20100200798; 20110162410; 20110226983; 20110289748; 20120138846; 20120187331; 20120312048; 20130075063; 20130119299; 20130126776; 20130126777; 20130126778; CN101864276; CN95117074; DE4116274; EP0398147; EP0430169; EP0509673; EP0539952; EP0565265; EP0582451; EP0608164; EP0659862; EP0720639; EP0779352; EP0974571; EP1167894; EP1193305; EP1716216; EP1832640; EP1985680; EP2036943; EP2149592; EP2246649; EP2249104; GB2007000746; GB2435747; GB2440258; JP4110388; RU2073058; WO1998050331; WO2004037752; WO2004037913; WO2005042663; WO2005083028; WO2005103190; WO2005103191; WO2005103192; WO2005105947; WO2005108522; WO2005108523; WO2006094303; WO2007002625; WO2007035697; WO2007053697; WO2007099350; WO2007109748; WO2008027555; WO2008065011; WO2008076272; WO2008121776; WO2008121783; WO2008121785; WO2009047535; WO2009114397; WO2009134957; WO2009151669; WO2010000993; WO2010000994; WO2010002020; WO2010002023; WO2010056695; WO2010059677; WO2010065005; WO2010075046; WO2010088320; WO2010119265; WO2011019350; each of which is expressly incorporated herein by reference in its entirety.

SUMMARY OF THE INVENTION

The present invention provides a premixed HFC refrigerant and compatible POE lubricant, e.g., in a transport container. The amount of lubricant is selected to an amount between about 5% to 20% by weight of the refrigerant. Preferably, the amount is 8% by weight.

The amount of POE should be at least 10% of the total lubricant amount, with about 20% POE by weight of refrigerant representing the amount of POE in the absence of mineral oil.

The mixture is preferably provided in a transport container, typically DOT approved, such as a DOT-39 container.

The refrigerant-lubricant mixture is charged into the refrigeration system after recovery of the R-22 from the system, without special efforts to remove the mineral oil lubricant. Assuming that the residual mineral oil is 8-24% of the charge, and the mixed refrigerant includes 8% POE, the resulting mixture is about 25-50% of the total lubricant, and the resulting mixed lubricant is 16-32% of refrigerant charge. Therefore, the present technology provides a compromise amount of lubricant that is sufficient to provide a charge to a range of refrigeration systems to be retrofitted, without having to remove mineral oil already in the system, measure the amount of oil removed or infer the total amount, measure an amount of POE to be added to the system based on the actual amount of R-407C added to the system, or measuring mineral oil/POE ratios.

Therefore, the present technologies vastly simplify the process for retrofitting, while achieving good results. Indeed, preliminary tests show that the efficiency of an R-22 air conditioning system is improved after the retrofitting, a surprising result given that the system itself is optimized for R-22 and mineral oil.

The container may be, for example, a 10, 15, 20, 30, 40, 50, 96, 123 pound or larger container. The amount of lubricant may be, for example, 0.8, 1.2, 1.6, 2.4, 3.2, 4, 8, or 10 pounds (8% lubricant). Bulk quantities may also be provided.

The amount of POE may be varied, for example, and may be about 5%, 6%, 7%, 7.5%, 8%, 9%, 10%, 12%, 12.5%, 15%, or the like. The precision of measurement may be, for example. ±0.1%, ±0.2%, ±0.25%, ±0.3%, ±0.5%, ±0.75%, ±1%, or ±2%. Preferably, the precision is within ±0.5%.

The container may be a DOT 3, 3A, 3AA, 3AL, 3B, 3BN, 3E, 4B, 4BA, 4B240ET, 4BW, 4E, 39, steel drum, for example: DOT-3AL1800; DOT 4D; DOT-3; DOT-39; DOT-3A; DOT-3A1000; DOT-3A1200; DOT-3A150; DOT-3A1800; DOT-3A2000; DOT-3A225; DOT-3A240; DOT-3A2400; DOT-3A300; DOT-3A400; DOT-3A480; DOT-3A480X; DOT-3AA; DOT-3AA1000; DOT-3AA1200; DOT-3AA150; DOT-3AA1800; DOT-3AA2000; DOT-3AA225; DOT-3AA240; DOT-3AA2400; DOT-3AA300; DOT-3AA400; DOT-3AA480; DOT-3AAX1800; DOT-3AAX2000; DOT-3AAX2200; DOT-3AAX2400; DOT-3AL; DOT-3AL1000; DOT-3AL150; DOT-3AL1800; DOT-3AL2000; DOT-3AL225; DOT-3AL240; DOT-3AL2400; DOT-3AL400; DOT-3AL480; DOT-3AX1800; DOT-3AX2000; DOT-3AX2200; DOT-3AX2400; DOT-3B; DOT-3B150; DOT-3B1800; DOT-3B225; DOT-3B240; DOT-3B300; DOT-3B400; DOT-3BN400; DOT-3BN480; DOT-3E1800; DOT-3HT; DOT-3HT2000; DOT-3T1800; DOT-3T2000; DOT-3T2200; DOT-3T2400; DOT-4A; DOT-4AA480; DOT-4B; DOT-4B150; DOT-4B150; DOT-4B225; DOT-4B240; DOT-4B240ET; DOT-4B300; DOT-4B400; DOT-4B480; DOT-4BA; DOT-4BA225; DOT-4BA240; DOT-4BA300; DOT-4BA400; DOT-4BW; DOT-4BW225; DOT-4BW240; DOT-4BW300; DOT-4BW400; DOT-4BW480; DOT-4DA; DOT-4DS; DOT-4E225; DOT-4E240; DOT-4L; DOT-AAX2400; and ICC-3E1800.

The preferred embodiment encompasses R-407C. However, the method is more generally directed to a retrofitting of systems employing a range of refrigerants that generally require mineral oil, alkane or alkylbenzene lubricants (CFC, PCC, HCC, HCFC, CFO, HCFO), with refrigerants that generally require polymeric or oxygenated lubricants, e.g., POE, PVE (HFC, PFO) (CFC=Chlorofluorocarbon, CFO=Chlorofluoroolefin, HCFC=Hydrochlorofluorocarbon, HCFO=Hydrochlorofluoroolefin, HFC=Hydrofluorocarbon, HFO=Hydrofluoroolefin, PCC=Perchlorocarbon). See Table 1, en.wikipedia.org/wiki/List_of_refrigerants.

It is therefore an object to provide a transportable container for charging a refrigerant system, having a charging port, containing a polyol ester (POE) lubricant and a compatible HFC refrigerant in a predetermined proportion. The proportion may be at least 2%, 3%, or 5% by weight and less than 25%, 20%, or 15% by weight, and preferably 8% by weight.

It is another object to provide a composition for retrofitting an R-22 refrigeration system, comprising POE and R-407C. The POE may be present at between 2-25%, 3-20%, 5-15%, or preferably 8% by weight, with the balance substantially R-407C.

It is a further object to provide a method for retrofitting a refrigeration system from R-22 refrigerant to R-407C refrigerant, comprising evacuating the R-22 refrigerant from the refrigeration system while maintaining at least 25% of the lubricant, wherein the lubricant is not POE, and adding a premixture of POE mixed in R-407C to charge the refrigeration system. The POE may be present at between 2-25%, 3-20%, 5-15%, or preferably 8% by weight, with the balance substantially R-407C.

It is a still further object to provide a retrofit kit for an R-22 refrigeration system, comprising a DOT-approved transport container for R-407C containing a mixture of R-407C and POE, and at least one replacement seal compatible with R-407C. The POE may be present at between 2-25%, 3-20%, 5-15%, or preferably 8% by weight, with the balance substantially R-407C.

It is a still further object to provide a method for retrofitting a hermetically sealed refrigeration system from an HCFC refrigerant compatible with a mineral oil or alkyl benzene lubricant to a HFC refrigerant compatible with polyol ester lubricant, comprising: providing a transport container containing the HFC refrigerant mixed with polyol ester lubricant; withdrawing the HCFC from within the refrigeration system through a charge-discharge port, leaving at least a portion of the mineral oil or alkyl benzene lubricant; and charging the refrigeration system from the transport container with the HFC mixed with the polyol ester lubricant. The polyol ester lubricant may be present at between 2-25%, 3-20%, 5-15%, or preferably 8% by weight, with the balance substantially HFC.

Another object is to provide a method for retrofitting a system from an HCFC refrigerant compatible with a mineral oil or alkyl benzene lubricant to an HFC refrigerant compatible with a polyol ester lubricant, comprising: evacuating the HCFC from the system, leaving at least a portion of the mineral oil or alkyl benzene lubricant; and charging the refrigeration system with an HFC refrigerant mixed with a polyol ester lubricant in a predetermined ratio of 5-15% by weight.

A kit is provided for retrofitting an HCFC refrigeration system having residual mineral oil lubricant, comprising: a transport container, containing an HFC refrigerant mixed polyol ester lubricant. A kit is also provided for retrofitting an R-22 refrigeration system having residual mineral oil lubricant, comprising: a U.S. Department of Transportation certified transport container; and R-407C mixed with polyol ester lubricant. The polyol ester lubricant may be present at between 2-25%, 3-20%, 5-15%, or preferably 8% by weight. The mineral oil or alkyl benzene lubricant may be a mineral oil lubricant.

The HCFC to be replaced may comprise R-22, R-401A, R-409A, R-401B, R-409B, R-402A, R-402B, R-403B, R-408A, R-502, and/or mixtures of HCFCs, for example as provided in Table 1.

The HFC may comprise R-134a, R-404A, R-407A, R-407C, R-407F, R-410A, R-417A, R-417B, R-422A, R-422B, R-422C, R-422D, R-424A, R-427A, R-428A, R-434A, R-438A, R-442A, and RS07A, or for example, other blends of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a). Other HFCs or HFC blends, or HFC/HC blends, for example as provided in Table 1, may also be employed. The HFC may be a zeotropic blend.

The refrigeration system after recharging may have a concentration of about 15-32% mixed lubricant, or a concentration of about 20-25% mixed lubricant, or a concentration of about 15-25% mixed lubricant, by weight.

The transport container may be U.S. Department of Transportation compliant, e.g., DOT-39.

The metrics recited herein are intended to be interpreted according to common understanding and usage among those skilled in the art of refrigerant manufacture, distribution, and refrigeration system maintenance.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Example 1

A test was conducted of a residential air conditioning unit to determine the results of retrofitting an R-22 system with R-407C. In the test, the R-22 system, which was design and manufactured optimally for R-22, and used a mineral oil lubricant, was retrofitted with R-407C.

Instead of removing all of the mineral oil in the system, and replacing it with a defined amount of POE oil, which is required for R-407C, the R-22 was removed, and the residual mineral oil allowed to remain.

The evacuated system was recharged with a premixed quantity of R-407C with 8% by weight POE oil. Since R-407C is charged in the liquid phase, all of the oil, and most of the R-407C was transferred to the system from a transport container, e.g., DOT-39. The final POE concentration is estimated at 10-15% of the total oil in the system.

Prior to retrofitting, system was run for 13 hours over two days with the R-22 to collect the baseline data. The R-22 was then evacuated, and charged with R-407C to about 85% of the R-22 charge. The retrofitted refrigeration system with R-407C was then run for 91 hours.

The operating temperatures for R-22 (>86 F and <86 F) and R-407C (<86 F) were not the same, so performance measurements are not directly comparable, but the results support a conclusion that the R-407C does not degrade system efficiency performance.

Therefore, despite the various unknowns, including the amount of mineral oil remaining in the system, migration characteristics of the mixed lubricants around the system, the impact of the various lubricant phases on compressor lubrication, the operation of the system with R-407C was improved over the R-22 implementation.

Comparative Example 1

See: www.honeywell-refrigerants.com/india/?document=guide-to-retrofitting-ac-systems-from-r-22-to-r-422d-or-r-407c&download=1; www.honeywell.com/sites/servlet/com.merx.npoint.servlets.DocumentServlet?docid=DB0284B88-942E-B0A5-4028-CAFB85BB40AB, which are expressly incorporated herein by reference.

Comparative Examiner 2

See: www2.dupont.com/Refrigerants/en_US/assets/downloads/h70004_Suva407C_retrofit_guide.pdf, which is expressly incorporated herein by reference.

Comparative Example 3

See: opi.emersonclimate.com/CPID/GRAPHICS/Types/AEB/95-14.pdf, which is expressly incorporated herein by reference.

Comparative Example 4

See: www.refrigerants.com/pdf/Nat-R407Broch.pdf, which is expressly incorporated herein by reference.

Comparative Example 5

See: neilorme.com/Tecumseh%20Guidelines%20R407c.shtml, which is expressly incorporated herein by reference.

Comparative Example 6

See: www.bristolcompressors.com/files/1313/5464/2815/application_bulletin_(—)124.pdf, which is expressly incorporated herein by reference.

Comparative Example 7

See: americas.forane.com/export/sites/forane-americas/.content/medias/downloads/literature/forane-technical-digest.pdf, which is expressly incorporated herein by reference.

Although the present system and/or approach has been described with respect to at least one illustrative example, many variations and modifications will become apparent to those skilled in the art upon reading the specification. It is therefore the intention that the appended claims be interpreted as broadly as possible in view of the related art to include all such variations and modifications.

TABLE 1 ASHRAE Type Number IUPAC Name Molecular Formula CAS Number CFC R-211 1,1,1,2,2,3,3-Heptachloro-3-fluoropropane C₃FCl₇ 422-78-6 CFC R-112a 1,1,1,2-Tetrachloro-2,2-difluoroethane C₂F₂Cl₄ 76-11-9 CFC R-213 1,1,1,3,3-Pentachloro-2,2,3- C₃F₃Cl₅ 6/5/2354 trifluoropropane CFC R-215 1,1,1-Trichloro-2,2,3,3,3- C₃F₅Cl₃ 4259-43-2 pentafluoropropane CFC R-113a 1,1,1-Trichlorotrifluoroethane C₂F₃Cl₃ 354-58-5 CFC R-112 1,1,2,2-Tetrachloro-1,2-difluoroethane C₂F₂Cl₄ 76-12-0 CFC R-113 1,1,2-Trichlorotrifluoroethane C₂F₃Cl₃ 76-13-1 CFC R-114a 1,1-Dichlorotetrafluoroethane C₂F₄Cl₂ 374-07-2 CFC R-214 1,2,2,3-Tetrachloro-1,1,3,3- C₃F₄Cl₄ 2268-46-4 tetrafluoropropane CFC R-216 1,2-Dichloro-1,1,2,3,3,3- C₃F₆Cl₂ 661-97-2 hexafluoropropane CFC R-114 1,2-Dichlorotetrafluoroethane C₂F₄Cl₂ 76-14-2 CFC R-216ca 1,3-Dichloro-1,1,2,2,3,3- C₃F₆Cl₂ 662-01-1 hexafluoropropane CFC R-217 1-Chloro-1,1,2,2,3,3,3-heptafluoropropane C₃F₇Cl 422-86-6 CFC R-217ba 2-Chloro-1,1,1,2,3,3,3-heptafluoropropane C₃F₇Cl 76-18-6 CFC R-C317 Chloroheptafluorocyclobutane C₄ClF₇ 377-41-3 CFC R-115 Chloropentafluoroethane C₂F₅Cl 76-15-3 CFC R-13 Chlorotrifluoromethane CClF₃ 75-72-9 CFC R-12 Dichlorodifluoromethane CCl₂F₂ 75-71-8 CFC R-C316 Dichlorohexafluorocyclobutane C₄Cl₂F₆ 356-18-3 CFC R-212 Hexachlorodifluoropropane C₃F₂Cl₆ 76546-99-3 CFC R-111 Pentachlorofluoroethane C₂FCl₅ 354-56-3 CFC R-400 R-/114(50/50 wt %) OR 50% CCl₂F₂•50% C₂F₄Cl₂ OR (60/40)(must be specified) 60% CCl₂F₂•40% C₂F₄Cl₂ CFC R-11 Trichlorofluoromethane CCl₃F 75-69-4 CFO R-1112a 1,1-Dichloro-2,2-difluoroethylene C₂Cl₂F₂ 79-35-6 CFO R-1113 Chlorotrifluoroethylene C₂ClF₃ 79-38-9 HCC R-130a 1,1,1,2-Tetrachloroethane C₂H₂Cl₄ 630-20-6 HCC R-140a 1,1,1-Trichloroethane (Methyl C₂H₃Cl₃ or CH₃CCl₃ 71-55-6 chloroform) HCC R-130 1,1,2,2-Tetrachloroethane C₂H₂Cl₄ 79-34-5 HCC R-140 1,1,2-Trichloroethane C₂H₃Cl₃ 79-00-5 HCC R-150a 1,1-Dichloroethane C₂H₄Cl₂ 75-34-3 HCC R-150 1,2-Dichloroethane C₂H₄Cl₂ 107-06-2 HCC R-160 Chloroethane (ethyl chloride) C₂H₅Cl 75-00-3 HCC R-20 Chloroform (Trichloromethane) CHCl₃ 67-66-3 HCC R-40 Chloromethane CH₃Cl 74-87-3 HCC R-30 Dichloromethane (Methylene chloride) CH₂Cl₂ 75-09-2 HCC R-120 Pentachloroethane C₂HCl₅ 76-01-7 HCFC R-221 1,1,1,2,2,3-Hexachloro-3-fluoropropane C₃HFCl₆ 422-26-4 HCFC R-121a 1,1,1,2-Tetrachloro-2-fruoroethane C₂HFCl₄ 354-11-0 HCFC R-222c 1,1,1,3,3-Pentachloro-2,2-difluoropropane C₃HF₂Cl₅ 422-49-1 HCFC R-223cb 1,1,1,3-Tetrachloro-2,2,3-trifluoropropane C₃HF₃Cl₄ 422-50-4 HCFC R-232cb 1,1,1,3-Tetrachloro-2,2-difluoropropane C₃H₂F₂Cl₄ 677-54-3 HCFC R-224cc 1,1,1-Trichloro-2,2,3,3-tetrafluoropropane C₃HF₄Cl₃ 422-51-5 HCFC R-233cc 1,1,1-Trichloro-2,2,3-trifluoropropane C₃H₂F₃Cl₃ 131211-71-7 HCFC R-122b 1,1,1-Trichloro-2,2-difluoroethane C₂HF₂Cl₃ 354-12-1 HCFC R-131b 1,1,1-Trichloro-2-fruoroethane C₂H₂FCl₃ 2366-36-1 HCFC R-121 1,1,2,2-Tetrachloro-1-fluoroethane C₂HFCl₄ 354-14-3 HCFC R-122a 1,1,2-Trichloro-1,2-difluoroethane C₂HF₂Cl₃ 354-15-4 HCFC R-131a 1,1,2-Trichloro-1-fluoroethane C₂H₂FCl₃ 811-95-0 HCFC R-122 1,1,2-Trichloro-2,2-difluoroethane C₂HF₂Cl₃ 354-21-2 HCFC R-131 1,1,2-Trichloro-2-fruoroethane C₂H₂FCl₃ 359-28-4 HCFC R-223ca 1,1,3,3-Tetrachloro-1,2,2-trifluoropropane C₃HF₃Cl₄ 422-52-6 HCFC R-232ca 1,1,3,3-Tetrachloro-2,2-difluoropropane C₃H₂F₂Cl₄ 1112-14-7 HCFC R-224cb 1,1,3-Trichloro-1,2,2,3-tetrafluoropropane C₃HF₄Cl₃ 422-53-7 HCFC R-233cb 1,1,3-Trichloro-1,2,2-trifluoropropane C₃H₂F₃Cl₃ 421-99-8 HCFC R-233ca 1,1,3-Trichloro-2,2,3-trifluoropropane C₃H₂F₃Cl₃ 131221-36-8 HCFC R-225cc 1,1-Dichloro-1,2,2,3,3-pentafluoropropane C₃HF₅Cl₂ 13474-88-9 HCFC R-234cd 1,1-Dichloro-1,2,2,3-tetrafluoropropane C₃H₂F₄Cl₂ 70192-63-1 HCFC R-123b 1,1-Dichloro-1,2,2-trifluoroethane C₂HF₃Cl₂ 812-04-4 HCFC R-243cc 1,1-Dichloro-1,2,2-trifluoropropane C₃H₃F₃Cl₂ 7125-99-7 HCFC R-225eb 1,1-Dichloro-1,2,3,3,3-pentafluoropropane C₃HF₅Cl₂ 111512-56-2 HCFC R-132c 1,1-Dichloro-1,2-difluoroethane C₂H₂F₂Cl₂ 1842-05-3 HCFC R-252ec 1,1-Dichloro-1,2-difluoropropane C₃H₄F₂Cl₂ HCFC R-234fb 1,1-Dichloro-1,3,3,3-tetrafluoropropane C₃H₂F₄Cl₂ 64712-27-2 HCFC R-141b 1,1-Dichloro-1-fluoroethane C₂H₃FCl₂ 1717-00-6 HCFC R-234cb 1,1-Dichloro-2,2,3,3-tetrafluoropropane C₃H₂F₄Cl₂ 1/6/4071 HCFC R-243cb 1,1-Dichloro-2,2,3-trifluoropropane C₃H₃F₃Cl₂ 70192-70-0 HCFC R-132a 1,1-Dichloro-2,2-difluoroethane C₂H₂F₂Cl₂ 471-43-2 HCFC R-252cb 1,1-Dichloro-2,2-difluoropropane C₃H₄F₂Cl₂ 1112-01-2 HCFC R-141a 1,1-Dichloro-2-fluoroethane C₂H₃FCl₂ 430-53-5 HCFC R-225bb 1,2-Dichloro-1,1,2,3,3-pentafluoropropane C₃HF₅Cl₂ 422-44-6 HCFC R-234bc 1,2-Dichloro-1,1,2,3-tetrafluoropropane C₃H₂F₄Cl₂ 149329-26-0 HCFC R-123a 1,2-Dichloro-1,1,2-trifluoroethane C₂HF₃Cl₂ 354-23-4 HCFC R-225da 1,2-Dichloro-1,1,3,3,3-pentafluoropropane C₃HF₅Cl₂ 431-86-7 HCFC R-132b 1,2-Dichloro-1,1-difluoroethane C₂H₂F₂Cl₂ 1649-08-7 HCFC R-252dc 1,2-Dichloro-1,1-difluoropropane C₃H₄F₂Cl₂ HCFC R-234ba 1,2-Dichloro-1,2,3,3-tetrafluoropropane C₃H₂F₄Cl₂ 425-94-5 HCFC R-141 1,2-Dichloro-1-fluoroethane C₂H₃FCl₂ 430-57-9 HCFC R-261ba 1,2-Dichloro-2-fluoropropane C₃H₅FCl₂ 420-97-3 HCFC R-224ca 1,3,3-Trichloro-1,1,2,2-tetrafluoropropane C₃HF₄Cl₃ 422-54-8 HCFC R-225cb 1,3-Dichloro-1,1,2,2,3-pentafluoropropane C₃HF₅Cl₂ 507-55-1 HCFC R-234cc 1,3-Dichloro-1,1,2,2-tetrafluoropropane C₃H₂F₄Cl₂ 422-00-5 HCFC R-225ea 1,3-Dichloro-1,1,2,3,3-pentafluoropropane C₃HF₅Cl₂ 136013-79-1 HCFC R-243ec 1,3-Dichloro-1,1,2-trifluoropropane C₃H₃F₃Cl₂ 149329-27-1 HCFC R-234fa 1,3-Dichloro-1,1,3,3-tetrafluoropropane C₃H₂F₄Cl₂ 76140-39-1 HCFC R-234ca 1,3-Dichloro-1,2,2,3-tetrafluoropropane C₃H₂F₄Cl₂ 70341-81-0 HCFC R-243ca 1,3-Dichloro-1,2,2-trifluoropropane C₃H₃F₃Cl₂ 67406-68-2 HCFC R-243ea 1,3-Dichloro-1,2,3-trifluoropropane C₃H₃F₃Cl₂ 151771-08-3 HCFC R-252ca 1,3-Dichloro-2,2-difluoropropane C₃H₄F₂Cl₂ 1112-36-3 HCFC R-226cb 1-Chloro-1,1,2,2,3,3-hexafluoropropane C₃HF₆Cl 422-55-9 HCFC R-235cc 1-Chloro-1,1,2,2,3-pentafluoropropane C₃H₂F₅Cl 679-99-2 HCFC R-124a 1-Chloro-1,1,2,2-tetrafluoroethane C₂HF₄Cl 354-25-6 HCFC R-244cc 1-Chloro-1,1,2,2-tetrafluoropropane C₃H₃F₄Cl 421-75-0 HCFC R-226ea 1-Chloro-1,1,2,3,3,3-hexafluoropropane C₃HF₆Cl 359-58-0 HCFC R-244ec 1-Chloro-1,1,2,3-tetrafluoropropane C₃H₃F₄Cl HCFC R-133b 1-Chloro-1,1,2-Trifluoroethane C₂H₂F₃Cl 421-04-5 HCFC R-253ec 1-Chloro-1,1,2-trifluoropropane C₃H₄F₃Cl HCFC R-235fa 1-Chloro-1,1,3,3,3-pentafluoropropane C₃H₂F₅Cl 677-55-4 HCFC R-244fb 1-Chloro-1,1,3,3-tetrafluoropropane C₃H₃F₄Cl 2730-64-5 HCFC R-253fc 1-Chloro-1,1,3-trifluoropropane C₃H₄F₃Cl HCFC R-142b 1-Chloro-1,1-difluoroethane C₂H₃F₂Cl 75-68-3 HCFC R-235ca 1-Chloro-1,2,2,3,3-pentafluoropropane C₃H₂F₅Cl 28103-66-4 HCFC R-244cb 1-Chloro-1,2,2,3-tetrafluoropropane C₃H₃F₄Cl 67406-66-0 HCFC R-133 1-Chloro-1,2,2-Trifluoroethane C₂H₂F₃Cl 431-07-2 HCFC R-253cb 1-Chloro-1,2,2-trifluoropropane C₃H₄F₃Cl 70192-76-6 HCFC R-253eb 1-Chloro-1,2,3-trifluoropropane C₃H₄F₃Cl HCFC R-142a 1-Chloro-1,2-difluoroethane C₂H₃F₂Cl 25497-29-4 HCFC R-262fb 1-Chloro-1,3-difluoropropane C₃H₅F₂Cl HCFC R-151a 1-Chloro-1-fluoroethane C₂H₄ClF 1615-75-4 HCFC R-271fb 1-Chloro-1-fluoropropane C₃H₆FCl HCFC R-133a 1-Chloro-2,2,2-Trifluoroethane C₂H₂F₃Cl 75-88-7 HCFC R-253ca 1-Chloro-2,2,3-trifluoropropane C₃H₄F₃Cl 56758-54-4 HCFC R-262ca 1-Chloro-2,2-difluoropropane C₃H₅F₂Cl 420-99-5 HCFC R-225aa 2,2-Dichloro-1,1,1,3,3-pentafluoropropane C₃HF₅Cl₂ 128903-21-9 HCFC R-234ab 2,2-Dichloro-1,1,1,3-tetrafluoropropane C₃H₂F₄Cl₂ 149329-24-8 HCFC R-123 2,2-Dichloro-1,1,1-trifluoroethane C₂HF₃Cl₂ 306-83-2 HCFC R-234aa 2,2-Dichloro-1,1,3,3-tetrafluoropropane C₃H₂F₄Cl₂ 17705-30-5 HCFC R-225ba 2,3-Dichloro-1,1,1,2,3-pentafluoropropane C₃HF₅Cl₂ 422-48-0 HCFC R-234bb 2,3-Dichloro-1,1,1,2-tetrafluoropropane C₃H₂F₄Cl₂ 149329-25-9 HCFC R-234da 2,3-Dichloro-1,1,1,3-tetrafluoropropane C₃H₂F₄Cl₂ 146916-90-7 HCFC R-243da 2,3-Dichloro-1,1,1-trifluoropropane C₃H₃F₃Cl₂ 338-75-0 HCFC R-226ba 2-Chloro-1,1,1,2,3,3-hexafluoropropane C₃HF₆Cl 51346-64-6 HCFC R-124 2-Chloro-1,1,1,2-tetrafluoroethane C₂HF₄Cl 2837-89-0 HCFC R-244bb 2-Chloro-1,1,1,2-tetrafluoropropane C₃H₃F₄Cl 421-73-8 HCFC R-226da 2-Chloro-1,1,1,3,3,3-hexafluoropropane C₃HF₆Cl 431-87-8 HCFC R-235da 2-Chloro-1,1,1,3,3-pentafluoropropane C₃H₂F₅Cl 134251-06-2 HCFC R-244db 2-Chloro-1,1,1,3-tetrafluoropropane C₃H₃F₄Cl 117970-90-8 HCFC R-253bb 2-Chloro-1,1,2-trifluoropropane C₃H₄F₃Cl HCFC R-244da 2-Chloro-1,1,3,3-tetrafluoropropane C₃H₃F₄Cl 19041-02-2 HCFC R-244ba 2-Chloro-1,2,3,3-tetrafluoropropane C₃H₃F₄Cl HCFC R-253ba 2-Chloro-1,2,3-trifluoropropane C₃H₄F₃Cl HCFC R-271d 2-Chloro-1-fluoropropane C₃H₆FCl HCFC R-271b 2-Chloro-2-fluoropropane C₃H₆FCl 420-44-0 HCFC R-225ca 3,3-Dichloro-1,1,1,2,2-pentafluoropropane C₃HF₅Cl₂ 422-56-0 HCFC R-226ca 3-Chloro-1,1,1,2,2,3-hexafluoropropane C₃HF₆Cl 422-57-1 HCFC R-235cb 3-Chloro-1,1,1,2,3-pentafluoropropane C₃H₂F₅Cl 422-02-6 HCFC R-244eb 3-Chloro-1,1,1,2-tetrafluoropropane C₃H₃F₄Cl HCFC R-244fa 3-Chloro-1,1,1,3-tetrafluoropropane C₃H₃F₄Cl HCFC R-253fb 3-Chloro-1,1,1-trifluoropropane C₃H₄F₃Cl 460-35-5 HCFC R-244ca 3-Chloro-1,1,2,2-tetrafluoropropane C₃H₃F₄Cl 679-85-6 HCFC R-244ea 3-Chloro-1,1,2,3-tetrafluoropropane C₃H₃F₄Cl HCFC R-253ea 3-Chloro-1,1,2-trifluoropropane C₃H₄F₃Cl HCFC R-262fa 3-Chloro-1,1-difluoropropane C₃H₅F₂Cl HCFC R-253fa 3-Chloro-1,3,3-trifluoropropane C₃H₄F₃Cl HCFC R-142 Chlorodifluoroethane C₂H₃F₂Cl 25497-29-4 HCFC R-22 Chlorodifluoromethane CHClF₂ 75-45-6 HCFC R-262 Chlorodifluoropropane C₃H₅F₂Cl 134190-53-7 HCFC R-151 Chlorofluoroethane C₂H₄ClF 110587-14-9 HCFC R-31 Chlorofluoromethane CH₂FCl 593-70-4 HCFC R-271 Chlorofluoropropane C₃H₆FCl 134190-54-8 HCFC R-226 Chlorohexafluoropropane C₃HF₆Cl 134308-72-8 HCFC R-235 Chloropentafluoropropane C₃H₂F₅Cl 134237-41-5 HCFC R-244 Chlorotetrafluoropropane C₃H₃F₄Cl 134190-50-4 HCFC R-253 Chlorotrifluoropropane C₃H₄F₃Cl 134237-44-8 HCFC R-132 Dichlorodifluoroethane C₂H₂F₂Cl₂ 25915-78-0 HCFC R-252 Dichlorodifluoropropane C₃H₄F₂Cl₂ 134190-52-6 HCFC R-21 Dichlorofluoromethane CHFCl₂ 75-43-4 HCFC R-261 Dichlorofluoropropane C₃H₅FCl₂ 134237-45-9 HCFC R-225 Dichloropentafluoropropane C₃HF₅Cl₂ 127564-92-5 HCFC R-234 Dichlorotetrafluoropropane C₃H₂F₄Cl₂ 127564-83-4 HCFC R-243 Dichlorotrifluoropropane C₃H₃F₃Cl₂ 134237-43-7 HCFC R-222 Pentachlorodifluoropropane C₃HF₂Cl₅ 134237-36-8 HCFC R-231 Pentachlorofluoropropane C₃H₂FCl₅ 134190-48-0 HCFC R-500 R-/152a (73.8/26.2) 73.8%•CCl₂F₂•26.2% C₂H₄F₂ Carrene #7^([2]) HCFC R-505 R-/31 (78/22) 78% CCl₂F₂•22% CH₂FCl HCFC R-408A R-/143a/22 (7 ± 2/46 ± 1/47 ± 2) 7 ± 2% C₂HF₅•46 ± 1% C₂H₃F₃•47 ± 2% CHClF₂ FX-10^([2][1]) HCFC R-402B R-/290/22 (38 ± 2/2 ± 1/60 ± 2) 38 ± 2% C₂HF₅•2 ± 1% C₃H₈•60 ± 2% CHClF₂ HP-81^([2][1]) HCFC R-402A R-/290/22 (60 ± 2/2 ± 1/38 ± 2) 60 ± 2% C₂HF₅•2 ± 1% C₃H₈•38 ± 2% CHClF₂ HP-80^([2][1]) HCFC R-416A R-a/124/600 (59 + .5-1/39.5 + 1, −.5/1.5 + 59 + .5, −1% C₂H₂F₄•39.5 + 1, −.5% FRIGC (FR-)^([2]) 1, −.2) C₂HF₄Cl•1.5 + 1, −.2% C₄H₁₀ HCFC R-420A R-a/142b (88 + 1, −0/12 + 0, −1) 88 + 1, −0% C₂H₂F₄•12 + 0, −1% C₂H₃F₂Cl Choice Refrigerant^([1]) HCFC R-502 R-/115(48.8/51.2) 48.8% CHClF₂•51.2% C₂F₅Cl HCFC R-501 R-/12 (75/25) 75% CHClF₂•25% CCl₂F₂ HCFC R-409A R-/124/142b (60 ± 2/25 ± 2/15 ± 1) 60 ± 2% CHClF₂•25 ± 2% C₂HF₄Cl•15 ± FX-56^([2][1]) 1% C₂H₃F₂Cl HCFC R-409B R-/124/142b (65 ± 2/25 ± 2/10 ± 1) 65 ± 2% CHClF₂•25 ± 2% C₂HF₄Cl•10 ± FX-57^([2]) 1% C₂H₃F₂Cl HCFC R-414B R-/124/600a/142b 50 ± 2% CHClF₂•39 ± 2% C₂HF₄Cl•1.5 ± Hot Shot,^([2][1]) Kar (50 ± 2/39 ± 2/1.5 ± .5/9.5 + .5-1) .5% C₄H₁₀•9.5 + .5, −1% C₂H₃F₂Cl Kool^([2]) HCFC R-414A R-/124/600a/142b 51 ± 2% CHClF₂•28.5 ± 2% C₂HF₄Cl•4 ± GHG-X4,^([2]) (51 ± 2/28.5 ± 2/4 ± .5/16.5 + .5-1) .5% C₄H₁₀•16.5 + .5, −1% C₂H₃F₂Cl Autofrost,^([2]) Chill-It^([2]) HCFC R-415B R-/152a (25 ± 1/75 ± 1) 25 ± 1% CHClF₂•75 ± 1% C₂H₄F₂ HCFC R-415A R-/152a (82 ± 1/18 ± 1) 82 ± 1% CHClF₂•18 ± 1% C₂H₄F₂ HCFC R-401C R-/152a/124 (33 ± 2/15 + .5, −1.5/52 ± 1) 33 ± 2% CHClF₂•15 + .5, −1.5% C₂H₄F₂•52 ± MP-52^([1]) 1% C₂HF₄Cl HCFC R-401A R-/152a/124 (53 ± 2/13 + .5, −1.5/34 ± 1) 53 ± 2% CHClF₂•13 + .5, −1.5% C₂H₄F₂•34 ± MP-39^([2][1]) 1% C₂HF₄Cl HCFC R-401B R-/152a/124 (61 ± 2/11 + .5, −1.5/28 ± l) 61 ± 2% CHClF₂•11 + .5, −1.5% C₂H₄F₂•28 ± MP-66^([2][1]) 1% C₂HF₄Cl HCFC R-405A R-/152a/142b/C318 45 ± 0% CHClF₂•7 ± 1% C₂H₄F₂•5.5 ± GREENCOOL (45 ± 0/7 ± 1/5.5 ± 1/42.5 ± 2) 1% C₂H₃F₂Cl•42.5 ± 2% C₄F₈ G2015^([2]) HCFC R-509[A] R-/218 (44/56) 44% CHClF₂•56% C₃F₈ Arcton TP5R2^([2]) HCFC R-412A R-/218/142b (70 ± 2/5 ± 2/25 ± 1) 70 ± 2% CHClF₂•5 ± 2% C₃F₈•25 ± 1% C₂H₃F₂Cl Arcton TP5R^([2]) HCFC R-406A R-/600a/142b (55 ± 2/4 ± 1/41 ± 0) 55 ± 2% CHClF₂•4 ± 1% C₄H₁₀•41 ± 0% C₂H₃F₂Cl GHG^([2][1]) HCFC R-406B R-/600a/142b (65 ± 2/4 ± 1/31 ± 0) 65 ± 2% CHClF₂•4 ± 1% C₄H₁₀•31 ± 0% C₂H₃F₂Cl GHG-HP^([2]) HCFC R-503 R-/13 (40.1/59.9) 40.1% CHF₃•59.9% CClF₃ HCFC R-418A R-0/22/152a (1.5 ± .5/96 ± 1/2.5 ± .5) 1.5 ± .5% C₃H₈•96 ± 1% CHClF₂•2.5 ± .5% C₂H₄F₂ HCFC R-403B R-0/22/218 (5 + .2, −2/56 ± 2/39 ± 0) 5 ± .2, −2% C₃H₈•56 ± 2% CHClF₂•39 ± 0% C₃F₈ ISCEON 69-L^([2]) HCFC R-403A R-0/22/218 (5 + .2, −2/75 ± 2/20 ± 0) 5 + .2, −2% C₃H₈•75 ± 2% CHClF₂•20 ± 0% C₃F₈ ISCEON 69-S^([2]) HCFC R-506 R-/114 (55.1/44.9) 55.1% CH₂FCl•44.9% C₂F₄Cl₂ HCFC R-504 R-/115 (48.2/51.8) 48.2% CH₂F₂•51.8% C₂F₅Cl HCFC R-232 Tetrachlorodifluoropropane C₃H₂F₂Cl₄ 134237-39-1 HCFC R-241 Tetrachlorofluoropropane C₃H₃FCl₄ 134190-49-1 HCFC R-223 Tetrachlorotrifluoropropane C₃HF₃Cl₄ 134237-37-9 HCFC R-242 Trichlorodifluoropropane C₃H₃F₂Cl₃ 134237-42-6 HCFC R-251 Trichlorofluoropropane C₃H₄FCl₃ 134190-51-5 HCFC R-224 Trichlorotetrafluoropropane C₃HF₄Cl₃ 134237-38-0 HCFC R-233 Trichlorotrifluoropropane C₃H₂F₃Cl₃ 134237-40-4 HCFO R-1233zd 1-Chloro-3,3,3-trifluoropropene C₃H₂ClF₃ 2730-43-0 HCFO R-411A R-0/22/152a (1.5 + 0-1/87.5 + 1.5 + 0, −1% C₃H₆•87.5 + 2, −0% CHClF₂•11 + GREENCOOL 2, −0/11 + 0, −1) 0, −1% C₂H₄F₂ G2018a^([2]) HCFO R-411B R-0/22/152a (3 + 0, −1/94 + 3 + 0, −1% C₃H₆•94 + 2, −0% CHClF₂•3 + GREENCOOL 2, −0/3 + 0, −1) 0, −1% C₂H₄F₂ G2018b^([2]) HCFO R-411C R-0/22/152a (3 + 0, −1/95.5 + 3 + 0, −1% C₃H₆•95.5 + 2, −0% CHClF₂•1.5 + GREENCOOL 2, −0/1.5 + 0, −1) 0, −1% C₂H₄F₂ G2018c^([2]) HCO R-1140 Chloroethylene (vinyl chloride) C₂H₃Cl 75-01-4 HCO R-1130 cis-1,2-Dichloroethylene C₂H₂Cl₂ 156-59-2 HCO R-1120 Trichloroethylene (trielene) C₂HCl₃ 79-01-6 HFC R-329ccb 1,1,1,2,2,3,3,4,4-Nonafluorobutane C₄HF₉ 375-17-7 HFC R-347ccd 1,1,1,2,2,3,3-Heptafluorobutane C₄H₃F₇ 662-00-0 HFC R-236cb 1,1,1,2,2,3-Hexafluoropropane C₃H₂F₆ 677-56-5 HFC R-227ea 1,1,1,2,3,3,3-Heptafluoropropane C₃HF₇ 431-89-0 HFC R-236ea 1,1,1,2,3,3-Hexafluoropropane C₃H₂F₆ 431-63-0 HFC R-338eea 1,1,1,2,3,4,4,4-Octafluorobutane C₄H₂F₈ 75995-72-1 HFC R-245eb 1,1,1,2,3-Pentafluoropropane C₃H₃F₅ 431-31-2 HFC R-134a 1,1,1,2-Tetrafluoroethane C₂H₂F₄ 811-97-2 HFC R-236fa 1,1,1,3,3,3-Hexafluoropropane C₃H₂F₆ 690-39-1 HFC R-365mfc 1,1,1,3,3-Pentafluorobutane C₄H₅F₅ 406-58-6 HFC R-245fa 1,1,1,3,3-Pentafluoropropane C₃H₃F₅ 460-73-1 HFC R-143a 1,1,1-Trifluoroethane C₂H₃F₃ 420-46-2 HFC R-ca 1,1,2,2,3,3,3-Heptafluoropropane C₃HF₇ 2252-84-8 HFC R-245ca 1,1,2,2,3-Pentafluoropropane C₃H₃F₅ 679-86-7 HFC R-134 1,1,2,2-Tetrafluoroethane C₂H₂F₄ 359-35-3 HFC R-254cb 1,1,2,2-Tetrafluoropropane C₃H₄F₄ 40723-63-5 HFC R-245ea 1,1,2,3,3-Pentafluoropropane C₃H₃F₅ 24270-66-4 HFC R-143 1,1,2-Trifluoroethane C₂H₃F₃ 430-66-0 HFC R-152a 1,1-Difluoroethane C₂H₄F₂ 75-37-6 HFC R-236me 1,2,2,2-Tetrafluoroethyl difluoromethyl C₃H₂F₆O 57041-67-5 ether HFC R-152 1,2-Difluoroethane C₂H₄F₂ 624-72-6 HFC R-E143a 2,2,2-Trifluoroethyl methyl ether C₃H₅F₃O 460-43-5 HFC R-E134 Bis(difluoromethyl)ether C₂H₂F₄O 1691-17-4 HFC R-32 Difluoromethane CH₂F₂ 75-10-5 HFC R-245qc Difluoromethyl 1,1,2-trifluoroethyl ether C₃H₃F₅O 69948-24-9 HFC R-245mf Difluoromethyl 2,2,2-trifluoroethyl ether C₃H₃F₅O 1885-48-9 HFC R-272 Difluoropropane C₃HeF₂ HFC R-161 Fluoroethane C₂H₅F 353-36-6 HFC R-41 Fluoromethane CH₃F 593-53-3 HFC R-281 Fruoropropane C₃H₇F HFC R-FE-36 Hexafluoropropane C₃H₂F₆ 359-58-0 HFC R-254pc Methyl 1,1,2,2-tetrafluoroethyl ether C₃H₄F₄O 425-88-7 HFC R-245mc Methyl pentafluoroethyl ether C₃H₃F₅O 22410-44-2 HFC R-143m Methyl trifluoromethyl ether C₂H₃F₃O 421-14-7 HFC R-E125 Pentafluorodimethyl ether C₂HF₅O 3822-68-2 HFC R-125 Pentafluoroethane C₂HF₅ 354-33-6 HFC R-245cb Pentafluoropropane C₃H₃F₅ 1814-88-6 HFC R-347mmy Perfluoroisopropyl methyl ether C₄H₃F₇O 22052-84-2 HFC R-347mcc Perfluoropropyl methyl ether C₄H₃F₇O 375-03-1 HFC R-421A R-/134a (58 ± 1/42 ± 1) 58 ± 1% C₂HF₅•42 ± 1% C₂H₂F₄ Choice R421A^([1]) HFC R-421B R-/134a (85 ± 1/15 ± 1) 85 ± 1% C₂HF₅•15 ± 1% C₂H₂F₄ Choice 421B^([1]) HFC R-417A R-/134a/600 (46.6 ± 1.1/50 ± 1/3.4 + .1, −.4) 46.6 ± 1.1% C₂HF₅•50 ± 1% C₂H₂F₄•3.4 + ISCEON 59,^([2]) NU- .1, −.4% C₄H₁₀ 22^([2]) HFC R-417B R-/134a/600 (79 ± 1/18.3 ± 1/2.7 + .1, −.5) 79 ± 1% C₂HF₅•18.3 ± 1% C₂H₂F₄•2.7 + .1, −.5% C₄H₁₀ HFC R-437A R-/134a/600/601 (19.5 + .5, −1.8/78.5 + 19.5 + .5, −1.8% C₂HF₅•78.5 + 1.5, −.7% 1.5, −.7/1.4 + .1, −.2/.6 + .1, −.2) C₂H₂F₄•1.4 + .1, −.2% C₄H₁₀•.6 + .1, −.2% C₅H₁₂ HFC R-426A R-/134a/600/601a (5.1 ± 1/93 ± 1/1.3 + 5.1 ± 1% C₂HF₅•93 ± 1% C₂H₂F₄•1.3 + RS-24 (new .1, −.2/.6 + .1, −.2) .1, −.2% C₄H₁₀•.6 + .1, −.2% C₅H₁₂ comp.)^([1]) HFC R-422B R-/134a/600a (55 ± 1/42 ± 1/3 + .1, −.5) 55 ± 1% C₂HF₅•42 ± 1% C₂H₂F₄•3 + ICOR XAC1^([1]) .1, −.5% C₄H₁₀ HFC R-422D R-/134a/600a (65.1 + 65.1 + .9, −1.1% C₂HF₅•31.5 ± ISCEON MO29^([1]) .9, −1.1/31.5 ± 1/3.4 + .1, −.4) 1% C₂H₂F₄•3.4 + .1, −.4% C₄H₁₀ HFC R-422C R-/134a/600a (82 ± 1/15 ± 1/3 + .1, −.5) 82 ± 1% C₂HF₅•15 ± 1% C₂H₂F₄•3 + ICOR XLT1^([1]) .1, −.5% C₄H₁₀ HFC R-422A R-/134a/600a (85.1 ± 1/11.5 ± 1/3.4 + .1, −.4) 85.1 ± 1% C₂HF₅•11.5 ± 1% C₂H₂F₄•3.4 + ISCEON 79^([1]) .1, −.4% C₄H₁₀ HFC R-424A R-/134a/600a/600/601a 50.5 ± 1% C₂HF₅•47 ± 1% C₂H₂F₄•1.9 + RS-44 (new (50.5 ± 1/47 ± 1/.9 + .1, −.2/1 + .3, −.1% C₄H₁₀•.6 + .1, −.2% C₅H₁₂ comp.)^([1]) .1, +.2/.6 + .1, −.2) HFC R-419A R-/134a/E170 (77 ± 1/19 ± 1/4 ± 1) 77 ± 1% C₂HF₅•19 ± 1% C₂H₂F₄•4 ± 1% C₂H₆O HFC R-507[A] R-/143a (50/50) 50% C₂HF₅•50% C₂H₃F₃ AZ-50^([2][1]) HFC R-404A R-/143a/134a (44 ± 2/52 ± 1/4 ± 2) 44 ± 2% C₂HF₅•52 ± 1% C₂H₃F₃•4 ± 2% C₂H₂F₄ HP-62,^([2][1]) FX-70^([2][1]) HFC R-434A R-/143a/134a/600a 63.2 ± 1% C₂HF₅•18 ± 1% C₂H₃F₃ •16 ± RS-45^([1]) (63.2 ± 1/18 ± 1/16 ± 1/2.8 + .1, −.2) 1% C₂H₂F₄•2.8 + .1, −.2% C₄H₁₀ HFC R-428A R-/143a/290/600a (77.5 ± 1/20 ± 1/.6 + 77.5 ± 1% C₂HF₅•20 ± 1% C₂H₃F₃•.6 + RS-52^([1]) .1, −.2/1.9 + .1, −.2) .1, −.2% C₃H₈•1.9 + .1, −.2% C₄H₁₀ HFC R-423A R-a/227ea (52.5 ± 1/47.5 ± 1) 52.5 ± 1% C₂H₂F₄•47.5 ± 1% C₃HF₇ HFC R-430A R-a/600a (76 ± 1/24 ± 1) 76 ± 1% C₂H₄F₂•24 ± 1% C₄H₁₀ HFC R-413A R-/134a/600a (9 ± 1/88 ± 2/3 + 0, −1) 9 ± 1% C₃F₈•88 ± 2% C₂H₂F₄•3 + 0, −1% C₄H₁₀ ISCEON 49^([2]) HFC R-508[A] R-/116 (39/61) 39% CHF₃•61% C₂F₆ Klea 5R3^([2][1]) HFC R-508B R-/116 (46/54) 46% CHF₃•54% C₂F₆ Suva 95^([2][1]) HFC R-440A R-0/134a/152a (.6 ± .1/1.6 ± .6/97.8 ± .5) .6 ± .1% C₃H₈•1.6 ± .6% C₂H₂F₄•97.8 ± .5% C₂H₄F₂ HFC R-431A R-0/152a (71 ± 1/29 ± 1) 71 ± 1% C₃H₈•29 ± 1% C₂H₄F₂ HFC R-410B R-/125 (45 ± 1/55 ± 1) 45 ± 1% CH₂F₂•55 ± 1% C₂HF₅ AC9100^([1]) HFC R-410A R-/125 (50 + .5, −1.5/50 + 1.5, −.5) 50 + .5, −1.5% CH₂F₂•50 + AZ-20,^([2]) Puron,^([2]) 1.5, −.5% C₂HF₅ Suva 9100^([2]) HFC R-407B R-/125/134a (10 ± 2/70 ± 2/20 ± 2) 10 ± 2% CH₂F₂•70 ± 2% C₂HF₅•20 ± 2% C₂H₂F₄ Klea 61^([2]) HFC R-407D R-/125/134a (15 ± 2/15 ± 2/70 ± 2) 15 ± 2% CH₂F₂•15 ± 2% C₂HF₅•70 ± 2% C₂H₂F₄ HFC R-407A R-/125/134a (20 ± 2/40 ± 2/40 ± 2) 20 ± 2% CH₂F₂•40 ± 2% C₂HF₅•40 ± 2% C₂H₂F₄ Klea 60^([2][1]) HFC R-407C R-/125/134a (23 ± 2/25 ± 2/52 ± 2) 23 ± 2% CH₂F₂•25 ± 2% C₂HF₅•52 ± 2% C₂H₂F₄ Klea 66,^([2]) AC9000^([1]) HFC R-407E R-/125/134a (25 ± 2/15 ± 2/60 ± 2) 25 ± 2% CH₂F₂•15 ± 2% C₂HF₅•60 ± 2% C₂H₂F₄ HFC R-407F R-/125/134a (30 ± 2/30 ± 2/40 ± 2) 30 ± 2% CH₂F₂•30 ± 2% C₂HF₅•40 ± 2% C₂H₂F₄ Genetron Performax LT^([1]) HFC R-438A R-/125/134a/600/601a (8.5 + 8.5 + .5, −1.5% CH₂F₂•45 ± 1.5% C₂HF₅•44.2 ± KDD5,^([1]) ISCEON .5, −1.5/45 ± 1.5/44.2 ± 1.5/1.7 + 1.5% C₂H₂F₄•1.7 + .1, −.2% C₄H₁₀•.6 + MO99^([1]) .1, −.2/.6 + .1, −.2) .1, −.2% C₅H₁₂ HFC R-427A R-/125/143a/134a 15 ± 2% CH₂F₂•25 ± 2% C₂HF₅•10 ± 2% Forane 427A^([1]) (15 ± 2/25 ± 2/10 ± 2/50 ± 2) C₂H₃F₃•50 ± 2% C₂H₂F₄ HFC R-439A R-/125/600a (50 ± 1/47 ± 1/3 ± .5) 50 ± 1% CH₂F₂•47 ± 1% C₂HF₅•3 ± .5% C₄H₁₀ HFC R-425A R-/134a/227ea (18.5 ± .5/69.5 ± .5/12 ± .5) 18.5 ± .5% CH₂F₂•69.5 ± .5% C₂H₂F₄•12 ± .5% C₃HF₇ HFC R-435A R-E170/152a (80 ± 1/20 ± 1) 80 ± 1% C₂H₆O•20 ± 1% C₂H₄F₂ HFC R-429A R-E170/152a/600a (60 ± 1/10 ± 1/30 ± 1) 60 ± 1% C₂H₆O•10 ± 1% C₂H₄F₂•30 ± 1% C₄H₁₀ HFC R-23 Trifluoromethane (Fluoroform) CHF₃ 75-46-7 HFC R-227ca2 Trifluoromethyl 1,1,2,2-tetrafluoroethyl C₃HF₇O 2356-61-8 ether HFC R-227me Trifluoromethyl 1,2,2,2-tetrafluoroethyl C₃HF₇O 2356-62-9 ether HFC R-263 Trifluoropropane C₃H₅F₃ HFO R-1132a 1,1-Difluoroethylene C₂H₂F₂ 75-38-7 HFO R-1234ze 1,3,3,3-Tetrafluoropropene C₃H₂F₄ 1645-83-6 HFO R-1234yf 2,3,3,3-Tetrafluoropropene C₃H₂F₄ 754-12-1 HFO R-1141 Fluoroethylene (vinyl fluoride) C₂H₃F 75-02-5 PCC R-10 Carbon tetrachloride CCl₄ 56-23-5 (Tetrachloromethane) PCC R-110 Hexachloroethane C₂Cl₆ 67-72-1 ^([1])Composition of Refrigerant Blends, www.epa.gov/ozone/snap/refrigerants/refblend.html ^([2])Andy's HVAC/R Web Page, users.isp.com/aschoen/refchart.pdf 

What is claimed is:
 1. A method for retrofitting a hermetically sealed refrigeration system from an HCFC refrigerant compatible with a mineral oil or alkyl benzene lubricant to a HFC refrigerant compatible with polyol ester lubricant, comprising: providing a transport container containing the HFC refrigerant mixed with a polyol ester lubricant; withdrawing the HCFC from within the refrigeration system through a charge-discharge port, leaving at least a portion of the mineral oil or alkyl benzene lubricant; and charging the refrigeration system from the transport container with the HFC mixed with the polyol ester lubricant.
 2. The method according to claim 1, wherein the mineral oil or alkyl benzene lubricant is a mineral oil lubricant.
 3. The method according to claim 1, wherein the HCFC comprises R-22, and the HFC comprises R-407C.
 4. The method according to claim 1, wherein the polyol ester is provided in an amount of about 5% to 15% by weight.
 5. The method according to claim 1, wherein the polyol ester is provided in an amount of about 8% by weight.
 6. The method according to claim 1, wherein the refrigeration system after recharging has a concentration of about 15-32% mixed lubricant.
 7. The method according to claim 1, wherein the transport container is U.S. Department of Transportation compliant.
 8. The method according to claim 1, wherein the transport container is compliant at least one of U.S. Department of Transportation standards DOT-39, DOT 3, DOT 3A, DOT 3AA, DOT 3AL, DOT 3B, DOT 3BN, DOT 3E, DOT 4B, DOT 4BA, DOT 4B240ET, DOT 4BW, DOT 4E, DOT 3AL1800; DOT 4D; DOT-3A1000; DOT-3A1200; DOT-3A150; DOT-3A1800; DOT-3A2000; DOT-3A225; DOT-3A240; DOT-3A2400; DOT-3A300; DOT-3A400; DOT-3A480; DOT-3A480X; DOT-3AA; DOT-3AA1000; DOT-3AA1200; DOT-3AA150; DOT-3AA1800; DOT-3AA2000; DOT-3AA225; DOT-3AA240; DOT-3AA2400; DOT-3AA300; DOT-3AA400; DOT-3AA480; DOT-3AAX1800; DOT-3AAX2000; DOT-3AAX2200; DOT-3AAX2400; DOT-3AL; DOT-3AL1000; DOT-3AL150; DOT-3AL1800; DOT-3AL2000; DOT-3AL225; DOT-3AL240; DOT-3AL2400; DOT-3AL400; DOT-3AL480; DOT-3AX1800; DOT-3AX2000; DOT-3AX2200; DOT-3AX2400; DOT-3B; DOT-3B150; DOT-3B1800; DOT-3B225; DOT-3B240; DOT-3B300; DOT-3B400; DOT-3BN400; DOT-3BN480; DOT-3E1800; DOT-3HT; DOT-3HT2000; DOT-3T1800; DOT-3T2000; DOT-3T2200; DOT-3T2400; DOT-4A; DOT-4AA480; DOT-4B; DOT-4B150; DOT-4B150; DOT-4B225; DOT-4B240; DOT-4B240ET; DOT-4B300; DOT-4B400; DOT-4B480; DOT-4BA; DOT-4BA225; DOT-4BA240; DOT-4BA300; DOT-4BA400; DOT-4BW225; DOT-4BW240; DOT-4BW300; DOT-4BW400; DOT-4BW480; DOT-4DA; DOT-4DS; DOT-4E225; DOT-4E240; DOT-4L; DOT-AAX2400; and ICC-3E1800.
 9. The method according to claim 1, wherein the HFC refrigerant comprises a blend of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a).
 10. A method for retrofitting a system from an HCFC refrigerant compatible with a mineral oil or alkyl benzene lubricant to an HFC refrigerant compatible with a polyol ester lubricant, comprising: evacuating the HCFC from the system, leaving at least a portion of the mineral oil or alkyl benzene lubricant; and charging the refrigeration system with an HFC refrigerant mixed with a polyol ester lubricant.
 11. The method according to claim 10, wherein the HFC refrigerant is mixed with a polyol ester lubricant in a predetermined ratio of between about 5% to 15% by weight.
 12. The method according to claim 10, wherein the HFC comprises R-407C, and the polyol ester lubricant is premixed with the HFC refrigerant in a ratio of about 8% by weight.
 13. The method according to claim 10, wherein the system after charging has a concentration of about 20-25% by weight lubricant as a mixture of at least one of a mineral oil lubricant and an alkyl benzene lubricant, and a polyol ester lubricant.
 14. The method according to claim 10, wherein the HFC refrigerant mixed with a polyol ester lubricant is provided in a U.S. Department of Transportation compliant transport container.
 15. A kit for retrofitting an HCFC refrigeration system having residual mineral oil lubricant, comprising container adapted for common carrier transport, containing an HFC refrigerant mixed with a polyol ester lubricant.
 16. The kit according to claim 15, for retrofitting an R-22 refrigeration system having residual mineral oil lubricant, wherein: the container comprises a U.S. Department of Transportation certified transport container; and the HFC comprises R-407C.
 17. The kit according to claim 15, wherein the polyol ester lubricant is present in an amount of about 5% to 15% by weight and the HFC refrigerant is present in an amount of 95-85% by weight.
 18. The kit according to claim 15, wherein the polyol ester lubricant is present in an amount of about 8% by weight and the HFC refrigerant is present in an amount of about 92% by weight.
 19. The kit according to claim 15, wherein the HFC is selected from the group consisting of R-134a, R-404A, R-407A, R-407C, R-407F, R-410A, R-417A, R-417B, R-422A, R-422B, R-422C, R-422D, R-424A, R-427A, R-428A, R-434A, R-438A, R-442A, and RS07A.
 20. The kit according to claim 15, wherein the transport container is DOT-39 compliant. 